US4666386A - Rotary pump - Google Patents

Rotary pump Download PDF

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Publication number
US4666386A
US4666386A US06/769,584 US76958485A US4666386A US 4666386 A US4666386 A US 4666386A US 76958485 A US76958485 A US 76958485A US 4666386 A US4666386 A US 4666386A
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US
United States
Prior art keywords
turns
vane
rotor
section
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/769,584
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English (en)
Inventor
Otmar Winkler
Heinz Peter
Manfred Krug
Siegbert Kessler
Ludwig Feuerer
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SKF GmbH
Original Assignee
SKF GmbH
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Filing date
Publication date
Application filed by SKF GmbH filed Critical SKF GmbH
Assigned to SKF GMBH, SCHWEINFURT, GERMANY, A CORP OF reassignment SKF GMBH, SCHWEINFURT, GERMANY, A CORP OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FEUERER, LUDWIG, KESSLER, SIEGBERT, KRUG, MANFRED, PETER, HEINZ, WINKLER, OTMAR
Application granted granted Critical
Publication of US4666386A publication Critical patent/US4666386A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/40—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member
    • F04C2/44—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member with vanes hinged to the inner member

Definitions

  • the present invention relates to rotary pumps comprising a driven rotor mounted in the bore of the housing having pivotally mounted vanes connected to the periphery of the rotor and biasing means for urging the free ends of the vanes against the bore of the housing during operation of the rotor. More specifically, the present invention relates to an improved mounting means for the vanes of rotary pumps.
  • the vane biasing means comprises a spring having coils circumscribing the pivotal axis of the vane wherein the axis of the coil turns extend in the direction of the pivot axis of the vane, the spring being formed by two coaxial sections of turns which spiral in opposite directions.
  • Each section of turns has a support end at the outer or inner end in a common direction and by a bail section between the inner and outer ends of the turn sections.
  • the bail section connects the inner and outer ends of the turn sections rigidly together and projects radially beyond the turn sections.
  • the support ends or the bail section are oriented so as to elastically press on a support surface of the rotor and the bail section or the support ends of the other turn section point toward the free end of the associated vane elastically pressing against the inner surface of the vane.
  • a single spring is sufficient to press the free end of the vane uniformly against the bore in the housing to accommodate the spring, a cavity of compact dimension in the radial direction is formed between the vane and the rotor so that there is little or no reduction in the size of the pump chamber as a result of this cavity mounting configuration.
  • Still another feature of the present invention producing space saving is the housing of the springs between the vane and the rotor wherein the wall thickness of the vanes can be kept advantageously small by reason of the fact that the axis of the turns of the spring coincides with the pivot action of the vanes.
  • a still further feature of the present invention is the arrangement of the pivot action of each vane which is formed by the axis of a cylindrical section which projects beyond the inner surface of the vane and is held pivotally in a cylindrical recess in the support surface of the rotor and wherein the two turn sections of the spring are held in each case in a recess in the cylindrical section which tightly encloses the associated section of turns.
  • This arrangement facilitates ease of manufacture and assembly of the spring and the vane.
  • the vane is made of an elastic material such as plastic
  • the turn sections of the spring can be snapped into the recess in the cylindrical section of the vane to produce a self-retaining spring-vane arrangement.
  • the spring-vane assembly can also be pivotally attached to the rotor without any additional assembly operations, for example, by pressing each cylindrical section into the associated groove-like recess of the rotor.
  • FIG. 1 is a fragmentary longitudinal section through a rotary pump in accordance with the present invention
  • FIG. 2 is an enlarged sectional view taken on lines 2--2 of FIG. 1;
  • FIG. 3 is a top plan view in the direction of one of the vanes with an installed spring biasing means taken in the direction of the arrow X is FIG. 2;
  • FIG. 4 is a sectional view taken on lines 4--4 through the vane illustrated in FIG. 3;
  • FIG. 5 is a sectional view through a modified rotary vane pump in accordance with the present invention.
  • FIG. 6 is a top view of a vane with the spring removed as viewed in the direction of the arrow Y in FIG. 5;
  • FIG. 7 is a sectional view taken on lines 7--7 of FIG. 6
  • FIG. 8 is a sectional view through a further modified rotary pump in accordance with the present invention.
  • FIG. 9 is a top plan view of a vane with an installed biasing spring taken in the direction of the arrow Z in FIG. 8;
  • FIG. 10 is a sectional view taken on lines 10--10 of FIG. 9.
  • the reference numeral 1 designates the housing of a rotary pump made in accordance with the present invention.
  • the pump serves as a vacuum brake pressure amplifier in the internal combustion engine of a motor vehicle (not shown).
  • Housing 1 consists of a bell section 3 and a cover section 4 which is flanged to the engine block 5 of the internal combustion engine by means of screws 2.
  • a rotor is mounted in the bore of the housing 1 which in the present instance is rigidly connected to a central shaft or axle 9 by means of a radially extending locking pin 8.
  • Rotor 7 is turned by a drive shaft 10 about axis 13 as indicated in broken lines in FIG.
  • a plurality of vanes 12, in the present instance four are illustrated, made of sliding friction resistant plastic are mounted at circumferentially spaced locations around the periphery of the rotor.
  • the inner ends of the vanes as illustrated are pivotally mounted to the rotor 7 so that they pivot about a pivot axis A p .
  • a helical spring 14 is mounted between each vane and rotor 7.
  • the spring 14 functions to elastically urge the free end of the vanes radially outwardly against the bore surface 6 of the housing so that the free ends slide along the bore of the bell section 3 in sealing relation therewith.
  • Spring 14 may be made of spring wire or comparable material.
  • each spring 14 contacts the inner surface 22 of vane 12 and is braced at its bail section 23 against a cylindrical support surface 24 formed in rotor 7.
  • the central axis 25 of the spring turns extend in the direction or is aligned with the pivot axis A p of vane 12 and in the present instance axis 25 coincides with the pivot axis A p of the vane 12.
  • each vane 12 is also formed by the central axis A c of a cylindrical section 28 which extends beyond the inner surface 22 of vane 12 and engages in a form locking manner in a cylindrical recess 27 in rotor 7.
  • the cylindrical section 28 as illustrated is formed adjacent the end of the vane pivotally connected to the rotor. In this fashion each vane 12 is supported on the rotor 7 so that it can pivot and slide by means of this cylindrical section 28.
  • the spring 14 as best illustrated in FIG. 3 comprises two coaxial sections of turns 29 and 30 having, in the present instance, three turns which spiral in opposite directions.
  • the spring sections 29 and 30 at one terminal outer end define support ends 21 which extend in a common direction parallel to one another.
  • a so-called bail section 23 connects the spring turn sections 29 and 30, the bail 23 projecting radially beyond the turn sections 29 and 30. In this fashion the bail section 23 connects the inner ends of the spring turn sections 29 and 30 rigidly together.
  • the turn sections 29 and 30 of each spring 14 are inserted in each case into a recess 31 in cylindrical section 28 of vane 12. These recesses 31 tightly enclose the spring turn sections 29 and 30 to hold them in place.
  • each vane has a recess 32 defining a pocket 23a for receiving the bail section 23 so that it points in the direction of the free end of the vane 12 and is braced thereby.
  • the recess extends along bail section 23 generally in the shape of an arc and opens laterally into recess 31 in vane 12.
  • the inner surface of each vane also has a pair of recesses 33 located radially opposite the support end 21 of spring 14. These recesses 33 are of a predetermined depth so that the support ends 21 project radially beyond rotor 7 can be completely received or accommodated in these recesses 33 when vane 12 pivots into position.
  • a locating pin 34 engageable in the spring turn sections 29 and 30 of each spring 14 aligns the spring sections concentrically. The pin is mounted in retention holes 35 in vane 12.
  • FIGS. 5, 6 and 7 a modified rotary pump in accordance with the present invention.
  • This embodiment is generally similar to the pump shown in FIGS. 1-4.
  • the spring turn sections 29 and 30 are not supported by means of a locking pin but are aligned and held in place simply by the boundary walls of the recess 27 in rotor 7 and/or recess 31 in vane 12.
  • a groove-like channel 36 is machined into support surface 24 of rotor 7 for each support end 21 of spring 14.
  • the channel 36 holds the support end 21. Since the support ends 21 do not project radially beyond support surface 24, in the present instance, there is no need for channels or recesses machined in the vanes 12 for holding the sections in place.
  • FIGS. 8, 9 and 10 A still further modification of a rotary pump in accordance with the present invention is illustrated in FIGS. 8, 9 and 10.
  • the basic configuration and principle of operation of the pump are generally the same as the previously embodiment.
  • the actuating springs 14 have two coaxial turn sections 29 and 30 which spiral in opposite directions and wherein the axis 25 of the turns of each spring extends in the direction of the pivot axis A p of vane 12 and is coincident therewith.
  • the two support ends 21 are located at the inner end of the sections of turns 29 and 30 and the bail section 23 pointing in the direction of the free end of vane 12 is located adjacent the outer ends of the turn sections 29 and 30.
  • bail section 23 connects the outer ends of the two sections of turns 29 and 30 rigidly together.
  • the bail section 23 projects radially beyond the turn sections 29 and 30 and is supported on cylindrical support surface 24 of rotor 7 in the radial direction whereby it projects radially beyond support surface 24.
  • the inner surface 22 of vane 12 has a channel-like recess 37 which is radially opposite bail section 23 and which at its outer terminal end opens into a connecting channel in the cylindrical section 28 of vane 12.
  • Channel 37 is of a predetermined depth so that the bail section 23 can be completely recessed therein when vane 12 pivots against rotor 7 as rotor 7 rotates.
  • Inner surface 24 is also provided with channels 38 for support end 21 of spring 14. Note that support end 21 is braced against the base of the recess 38.
  • the vanes do not have to be mounted for pivotal movement by means of a cylindrical chamber in the rotor wherein a complementary cylindrical section of the vane can slide.
  • the configuration may be concave, e.g. spherical to receive a correspondingly curved, convex section of the vane for sliding movement as the main pivots.
  • the pivot axis is held parallel to the rotational axis of the rotor by the free ends of the vanes so that the free ends can slide in the bore of the housing and thus align the vanes.
  • the attachment ends of the vanes can be connected pivotally by way of rolling elements or roller bearings to the rotor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
US06/769,584 1984-08-29 1985-08-26 Rotary pump Expired - Fee Related US4666386A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843431719 DE3431719A1 (de) 1984-08-29 1984-08-29 Fluegelzellenpumpe
DE3431719 1984-08-29

Publications (1)

Publication Number Publication Date
US4666386A true US4666386A (en) 1987-05-19

Family

ID=6244178

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/769,584 Expired - Fee Related US4666386A (en) 1984-08-29 1985-08-26 Rotary pump

Country Status (5)

Country Link
US (1) US4666386A (ja)
JP (1) JPS6166886A (ja)
DE (1) DE3431719A1 (ja)
FR (1) FR2569782B1 (ja)
GB (1) GB2164096B (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193228A (en) * 1991-05-10 1993-03-16 Matsushita Electric Works, Ltd. Toilet covering hinge assembly with damping capability
US5353899A (en) * 1991-07-04 1994-10-11 Sugatsune Industrial Co., Ltd. Damper mechanism
US5392884A (en) * 1992-08-26 1995-02-28 Nhk Spring Co., Ltd. Slow-acting rotary device
US5449054A (en) * 1992-12-30 1995-09-12 Itw-Ateco Gmbh Rotary damper
US6155328A (en) * 1997-12-12 2000-12-05 Hunter Douglas International N.V. Winding mechanism
US6173822B1 (en) * 1997-10-11 2001-01-16 Itw Ateco Gmbh Rotary damper
US6341677B1 (en) * 2000-12-04 2002-01-29 Delphi Technologies, Inc. Vehicle rotary suspension damper of composite construction
US20070108000A1 (en) * 2005-11-14 2007-05-17 Calvin Derr Rotary damper
US20100317493A1 (en) * 2009-06-11 2010-12-16 Giant Manufacturing Co., Ltd. Bicycle trainer
US20110036610A1 (en) * 2008-04-18 2011-02-17 Rainer Vollmer Machine tool having an electric drive motor
RU2459083C2 (ru) * 2010-11-26 2012-08-20 Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" Грунтозаборное устройство
CN101920100B (zh) * 2009-06-11 2013-02-20 巨大机械工业股份有限公司 自行车训练器
US20140170010A1 (en) * 2011-07-22 2014-06-19 Halla Visteon Climate Control Corp. Vane rotary compressor

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010755C2 (de) * 1990-04-04 1998-11-05 Pierburg Ag Flügelzellen- bzw. Schwenkflügel-Vakuumpumpe
FR2703408B1 (fr) * 1993-04-02 1995-05-19 Marjolaine Poinsot Pompe rotative à palettes universelle.
JPH09236018A (ja) * 1996-08-02 1997-09-09 Yuzo Fujieda 過給器
JP4536220B2 (ja) * 2000-06-20 2010-09-01 克則 大西 圧縮空気蓄積装置
JP2002130169A (ja) * 2000-10-20 2002-05-09 Katsunori Onishi ロータリーベーン式回転機械
DE102008054009B4 (de) * 2008-10-30 2014-11-20 Bayerische Motoren Werke Aktiengesellschaft Flügelzellenpumpe
US9605673B2 (en) * 2013-10-17 2017-03-28 Tuthill Corporation Pump with pivoted vanes

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US481303A (en) * 1892-08-23 Vehicle-spring
US602334A (en) * 1898-04-12 Rotary engine
US762539A (en) * 1904-02-02 1904-06-14 William H Leiman Rotary pump.
US1654005A (en) * 1926-06-28 1927-12-27 Luxmore William Windshield cleaner
US2463118A (en) * 1946-05-14 1949-03-01 Moore Raymond John Francis Movable vane rotary pump or fluid motor
JPS5718489A (en) * 1980-07-05 1982-01-30 Okimoto Tamada Spring compression type radial pump
US4483511A (en) * 1983-05-18 1984-11-20 Kitamura Valve Mfg. Co., Ltd. Valve assembly including elastic seals
DE3412971A1 (de) * 1984-04-06 1985-10-24 Pierburg Gmbh & Co Kg, 4040 Neuss Drehkolbenpumpe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585354A (en) * 1946-07-17 1952-02-12 Thorgrimsson Einar Rotary motor
US3824968A (en) * 1972-09-07 1974-07-23 Secondary Processing Syst Inc Rotary internal combustion engine
DE2335895A1 (de) * 1973-07-14 1975-01-30 Scheifele Sebastian Pumpe

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US481303A (en) * 1892-08-23 Vehicle-spring
US602334A (en) * 1898-04-12 Rotary engine
US762539A (en) * 1904-02-02 1904-06-14 William H Leiman Rotary pump.
US1654005A (en) * 1926-06-28 1927-12-27 Luxmore William Windshield cleaner
US2463118A (en) * 1946-05-14 1949-03-01 Moore Raymond John Francis Movable vane rotary pump or fluid motor
JPS5718489A (en) * 1980-07-05 1982-01-30 Okimoto Tamada Spring compression type radial pump
US4483511A (en) * 1983-05-18 1984-11-20 Kitamura Valve Mfg. Co., Ltd. Valve assembly including elastic seals
DE3412971A1 (de) * 1984-04-06 1985-10-24 Pierburg Gmbh & Co Kg, 4040 Neuss Drehkolbenpumpe

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193228A (en) * 1991-05-10 1993-03-16 Matsushita Electric Works, Ltd. Toilet covering hinge assembly with damping capability
US5353899A (en) * 1991-07-04 1994-10-11 Sugatsune Industrial Co., Ltd. Damper mechanism
US5392884A (en) * 1992-08-26 1995-02-28 Nhk Spring Co., Ltd. Slow-acting rotary device
US5449054A (en) * 1992-12-30 1995-09-12 Itw-Ateco Gmbh Rotary damper
US6173822B1 (en) * 1997-10-11 2001-01-16 Itw Ateco Gmbh Rotary damper
US6155328A (en) * 1997-12-12 2000-12-05 Hunter Douglas International N.V. Winding mechanism
US6443210B1 (en) 1997-12-12 2002-09-03 Hunter Douglas Industries Bv Winding mechanism
US6666252B2 (en) 1997-12-12 2003-12-23 Hunter Douglas Industries Bv Winding mechanism
US6341677B1 (en) * 2000-12-04 2002-01-29 Delphi Technologies, Inc. Vehicle rotary suspension damper of composite construction
US7510062B2 (en) * 2005-11-14 2009-03-31 Illinois Tool Works Inc. Rotary damper
US20070108000A1 (en) * 2005-11-14 2007-05-17 Calvin Derr Rotary damper
US20110036610A1 (en) * 2008-04-18 2011-02-17 Rainer Vollmer Machine tool having an electric drive motor
US8584771B2 (en) * 2008-04-18 2013-11-19 Robert Bosch Gmbh Machine tool having an electric drive motor
US20100317493A1 (en) * 2009-06-11 2010-12-16 Giant Manufacturing Co., Ltd. Bicycle trainer
US7955227B2 (en) * 2009-06-11 2011-06-07 Giant Manufacturing Co., Ltd. Bicycle trainer
CN101920100B (zh) * 2009-06-11 2013-02-20 巨大机械工业股份有限公司 自行车训练器
TWI386242B (zh) * 2009-06-11 2013-02-21 Giant Mfg Co Ltd 自行車訓練器
RU2459083C2 (ru) * 2010-11-26 2012-08-20 Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" Грунтозаборное устройство
US20140170010A1 (en) * 2011-07-22 2014-06-19 Halla Visteon Climate Control Corp. Vane rotary compressor
US9341064B2 (en) * 2011-07-22 2016-05-17 Hanon Systems Vane rotary compressor having a hinge-coupled vane

Also Published As

Publication number Publication date
GB2164096B (en) 1988-03-09
FR2569782B1 (fr) 1991-05-17
JPS6166886A (ja) 1986-04-05
FR2569782A1 (fr) 1986-03-07
DE3431719A1 (de) 1986-03-13
GB8521528D0 (en) 1985-10-02
GB2164096A (en) 1986-03-12

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Owner name: SKF GMBH, SCHWEINFURT, GERMANY, A CORP OF GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:WINKLER, OTMAR;PETER, HEINZ;KRUG, MANFRED;AND OTHERS;REEL/FRAME:004479/0087

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Effective date: 19910519